Performance and misc fixes

When snapping pathfinding to grid, avoid two waypoints within the same space when snapping is possible.
Fix for ray undefined in cost measurement.
Add invisibility to the default ignored statuses for pathfinding. Closes #202.
Don't show movement penalty in the ruler labels if token has certain statuses, like hidden. Closes #200.
Faster measurement of movement penalty through regions in conjunction with improvements added in Terrain Mapper v0.4.6.
Fix for ruler not functioning in sfrpg. Closes #206.
Update libGeometry to v0.3.14.

Full Changelog: 0.10.10...0.10.11